Apparatus for preventing the lateral contraction of a fabric during the process of weaving



F. BUYER. APPARATUS FOR PREVENTING THE LATERAL CONTRACTION OF A FABRIC nu RING THE PROCESS OF WEAV|NG.- APPLICATION FILED NOV-26, I920.

Patented Got. 24, 1922..

6 SHEETS-SHEET F. BOYER. APPARATUS FOR PREVENTING THE LATERALCONTRACTION OF A FABRIC DURING THE Paocess 0F WEAVING. 9 950 APPLICATION FILED NOV-26, I920.

Patented 06h M, 1922 6 SHEETS-SHEET 2- II/I F. BOYER. APPARATUS FOR PREVENTING THE LATERAL CONTRACTION OF A FABRIC DURING THE PROCESS OFNWEAVING. APPLICATION FILED Nov.2 6, 1920.

Patented 0c15.24,1922.

6 SHEETS-SHEET 3- NLA'38 F. BOYER. APPARATUS FOR PREVENTING THE LATERAL CONTRACTION OF A FABRIC DURING THE PROCESS OF WEAVING. APPLICATION man NOV-26. 1920.

Patented Oct. 24, 1922.

F. BOYER. APPARATUS FOR PREVENTING THE LATERAL CONTBACTION OF A FABRIC DURING .THE. PROCESS 0F WEAVING. APPLICATION FILED NOV-Z6, I920.

Patented 001:. 24, 19225;.

6 SHEETS-SHEET 5.

F. BOYER.- APPARATUS FOR PREVENTING THE LATERAL CONTRACTION OF A FABRIC DURING THE PROCESS OF WEAVING.

Patented Oct. 24, I922.

APPLICATION FILED NOV-26, I920.

6 SHEETSSHEET 6.

Patented Unit. 241,

rnnnalvn Borne, or Pliers, rnanon.

FOR PREVENTING THE LATERAL CCNTRACTIQN OF A FABRIC DURIISFG r THE PBDUESS F WEAVIIJI Application filed November as, 1920. Serial no. aaeaee.

To all "whom it may concern 1 Be it known that LFERNAND Borne, man

.ufacturer, a citizen of France, residing at Paris, in the l tepublicof France, have in-' vented certain new and useful llmprovea ments in Apparatus for Preventing thelJateral Contraction ofa Fabric Duringthe Process of Weaving, of which the followin r is a specification. f y y Weaving machines as constructed at the presenttime operate in such a manner that thefinished fabric becomes contracted, that isyto say narrower than the distance be tweenthe extreme warp threads when the warps are spread out as they are immediately before the completion of the fabric.

The result of this is that the present day weaving machines are not suitable for. the manufacture of all kinds of fabrics, making it necessary for fabricswhich must belunr conditionally of tl iesame width as the warp to, be produced by, hand.

T he presentinvention relates to a method for preventing the lateral contraction of a fabric during the process of weaving and consists in laying the weft thread in aserpentine line on the ground of the shed in such a way that on applyingpressure to the finished fabric no contractive action takes place either in the case of the weft thread nor that of-the warp The invention also relates to an apparatus for carrying out this method, the distinguishing feature of which is that the shuttle which inserts the weft thread in the shed is provided with rotating devices which bring the weft thread as it runs from the shuttle gradually from one side in a wavy form and secondly Wlhll guldes whlch brlng the threadas it runs from the shuttle spool into. the path of these devices. A In the drawlng: r

Flg. 1 18 a side elevation of the weavlng machine illustratingmy presentinvention.

Fig. 2is aside elevation of the same.

Fig. 3 is an elevation and partialcross section showing.therelationship of the bars and shafts. employed to operate the shuttle and mechanism associated therewith.

Fig. 1 is a cross section on line h-Zt,

.Flg. 5 1s an enlarged elevatlon of the shuttleand the devices associated therewith,

Fig. 6 is an end elevation and partial cross section illustrating these shuttle de parts; including the guides for directing the thread as the same comes from the shuttle. Fig. 8is an enlarged section on line 9-9, Fig. i v

Fig. 9 is a sectional elevation showing the vertical dimensions of the guide rollers and the parts associated therewith. I

Fig. 10 is a side elevation of the frame of the apparatus, i

Fig. 11 is aview similar to Fig. 1 show ing a modified form of the invention, and Fig. 12is an end elevation of the same. The constructional form shown in Figs. 1 to? shows an apparatus for preventing a fabric from becoming narrower during the process of weaving. 8 (see Figs. 1 and 2,)

is a machine frame, which carries on one 1'? and 18, (see Fig.

The rigid connection of the carrier 10 with the frame is obtained not only by being screwed to the transverse cross beam 91 (Fig. 9) which connects the top of two machine frames but also by the shuttle guides 11 and 12 (Figs. 1 and 6). which are screwed onto the carrier '10 and bracket 9; the latter being fixed to the frame 8 a rigid connection.

is also obtained for the lower part.

The slay 2 may give a blow in vertical direction since its carrier 16 is-linked to the blow lever 93 by the shaft 92. The shaft or imparts to the blow lever its rotating movement for carrying out the blow in the direction of the arrow 2' (Fig. 9). If the carrier 16 and with it the slay 2 is swung downwardly, the roller 14 slides in the channel of the. slay guide 13 downwardly and the bolt 15 constitutes in each position the pivot for equalizing the radial movement of thelever 93. Fig. 10 shows how, the bracket 9 is screwed onto the frame 8, the bearings of the hollow shaft 32 being marked 32', while the bearings of the shaft is a screw 22 and on the right hand side a screw 23, both or which screws are connected .with ashaft working in the bearings and 21. The shuttle 19 carries the removable shuttle box (see Fig. in which the shuttle snool isplaeed. From this shuttle spool 25 the weft thread runs throughthe slot 26 in the be into and through the guides 27 and 28 into the middle of the shed and thence according to requirements under the screws 22 or 23 (see Figs. 1., 5 and 7). In front of the screws 22 and 23 are the screw points 29 and 30 (see Figs. 1,5 and T) which are provided with longitudinal groove 31, (seeFig. 7). V In the bracket 9 rotates the hollow shatt32 which carries the gear wheel 33 (see Figs. 1, 3 and t). The gear wheel 83 is prevented from falling out of the bracket 9 by the locking ring 3 mounted on the hollow shaft 32 (see Fig. 1.) The gear wheel is driven by the gear wheel 85 which is rigidly connected to the wheel 37 by a. shait 36 rotating in. the bracket 9. The hollow sha'i t guides the rotating rod. 38 which can slide forwards or.

ba kwards and is provided with longitudinal groove 39. In the hollow shaft placed the key 10 which engages in the longitudinal groove 39. In consequence ofthis arrangement the rotating rod 38 when it slides forwards or. backwards also takes part on the rotation of the gear wheel38. The retatinsz' rod 38 has in fronta hollow space 1-1 (see Figs. t and in which the point of the screw 29 or 30 can enter. In line with this hollow space 11. in a slot in the rotating rod-38, is arranged the tappet trap 12, which can be turned up in the manner shown. in Fig. 4i iii-the direction of the arrow, but is always held in the shut position by the pres sure of thespring i?) on the hall 4%. If the shuttle 19 or the point of ascrew 29 or 30 be inserted in the hollow space 41. the trap rises in the direction of the arrow in Fig. 1. As soon as therotating rod i-lSr-otates with the wheel 38 and offers the slightest resist ance to a screw 22 or 23 the trap -12 is brought over the groove 31, snaps intothis under the pressure of the spring thus establishing a rigid connection and the tions of the rod 38., (see Fig. 5). th s coupling s released as soon as the shuttle19 becomes stationary and the rotatingrod 38 is drawn back.

On the'brachet Qare also nounted the two screws 22 and are compelled to take part inthe rota-. Conversely these two guides 4-5 and 4G slides forwards or backwards the thrust bar 4-8, which is guided in the corresponding part oi tho shuttle 19. In the shuttle 19 is a. wedge shaped groove 49, (see Figs. (3 and 7) on the thrust bar 18 is carried a COI'L'QSPOHiliDjl wedge. ll hen the thrust bar 18 is inserted in the shuttle 19 no rotation oi the shuttle can take place no matter in what position it may be. The thrust liar l8 is connected to the rotating rod 38 by the hanger 50. While on the one hand the hanger is screwed fast to the thrust bar 48 it terms on the other hand the bearing" in which the rod 38 rotates (see .lf igs. 1 and 2.) To the left and right of this bearing the locking rings 51 and 52 are rigidly connected to the rotating bar 38 so that this atter is compelled to take part in the forward or backward movement of the thrust bar 48 no matter whether the bar be rotating or not. On the frame 8 of the machine is also mounted the bracket 53. At the back of the bracket 53 on a shaft M is mounted the rotating worm wheel 57. The shaft 5 1 rotates in the bearings 55 and 56 (see Figs. 1 and 2). and on the same shaft and rigidly connected to the worm wheel 57 is mounted the chain wheel 59. ()n a shaft which is screwed to the shuttle guide 11 is n'ionnted a two part chain wheel 60 li ig. .lvcr these chain wheels and G0 is passed the chain (31 the ends of which a secured in a blocl: (32. which latter is ri 'olv connected to the thrust bar 4-8. 3 rotating; the worm wheel in one direction or the other. the chain (31 is set in motion. and thereby the thrust bar 4-8, is pushed to" '"rds or backwards and with it the rorod 33 also is moved.

On the frame 8 ol the machine (sec l igsi and is also. mounted the bearing: on. The bracket carries the bearing (rtand in those bearings 63 and 64; is journa led the shaft (35 which carries on one end of it the worm 66 which gears into the worm wheel 57. On the other side and ri iridh mounted on the shaft is the bevel wheel (3? which gears in to the bevel wheel (8. This bevel. wheel (38 fixed on thevertical driving shait (39 which is adapted to rotate in the bearings 70. T1 and 72. On the shaft 69 is also rigidly mounted the bevel wheel 73 which gears with the bevel wheel 37. i I

On the shuttle 19 between and above the bearings 20 and 21 are mounted the thread guides or guidebars and 75, and 7), which, when the shuttle is driven throughthc shed conduct the warp threads out of the screw 22 into the screw 2?, or vice versa. Fig. 5 shows the shuttle 19 in the position of: rest, that is to say, the shuttle is. in.contradistinction to the position shown in Fig. 1, moved to the left out ot the fabric, so that the blow of the slay2 can take place unimpeded. In this position the shuttle 19 (see Figs. 5

I The action of the apparatus is as follows The shuttle 191s driven onto-i the positihn of 1 6st (see Fig.6) in the direction of the arrow 6 in Fig! 1 thlkeagh the fahi'ief hof this purpose the driving shatttii? is send spondingly rotated. lhe bevel wheel 68 eon-t I nected to thisshaft transinitsflthe rotation to the bevel vWheel 67 and consequently to thevvorm 66) This latter rotates theworm [Wheel 57 and conse'qnehtly the ehainwheel 58 turns.

block 62 togethenwith the thi'ust hai' d8.

The t-liI US B "Carries with it the r tating rOdqSS by the hanger 50. the rotation of the shaft 69;- the bevel Wheel 73 likewise.tieans nits rotation to the bevel Wheel 87 and eonse'quentlyto the gear wheel Whiehtransmitsthis rotation to the gear Wheel 33 and to the hollow shaft32) The retatingiod 38 is consequently set in rotation by the key 40 and rotation transmitted by thetappefltiapto the screws 22 and 281 Owing to the 'lfact that the bass 48 thrusts the rotating rod 38 itorwa fds,while it rotates 'togetherw iththe screits, the screws 22 and wh ch engage with the Warp threads screw theinselveslthronpgh theshed,

h h whereby theshnttlethread 7 Whichruns out" his guidedunder theserew 22 Whiehpresses it ldown ttotthe bottom of the shed at the finished point kl Whei'ehyi't is immediately lead in a serpent ne line (see F gsgfl and 11),,As the doWnW'ai dfrdepression takes h placesnecessiyely from one side, the shnttle yspooleanlhave as much thread taken from it [as is necessary for the serpentine insertion," that is to say, more it neces saw than Width of the fabric.

The operation can he clearly seen from 1 in which fOTllhQ sake lof clearness the Warp threads lying in front otthe shuttle are omitted. Theadvanee of thehar t dSiS naturally so iegulatedthat" it 001"- responds to the pitch of thescrews and 23. The pitch ofthese sereWsTalsO' depends on the distance hetjween the warp threads 1;

Thesame arrangement is provided on the side 'of the machineoppositethat shotvn in i Fig. 1 in order to enable the shuttleto he driven through n the opposite direct on to that of the arrow eatttei the hlow and the change 01": the threads, If, therefore the shuttle 19 has passed completelythrough the fabric, when the hloelt- 62 the rod 48 can pass throiieh the slot d7 in the guides alnd 46, theshnttle 19 will he impelled directly against the rod 48 and the rotating bar 38 in the side oi? the machine opposite that shown in Fig. 1. By means of devices which are not shown in the drawing" the shuttle is held fast, the driving shaft 69 1'0- tates in the reverse direction and guides the e The heel 58* d ives the chain 61 andthislatter"carries fort'vardthe rot ing itself as above deserihedirom the point of the screw 29 or 30. /fVhen both rods ai-ein thejpositionot rest, the slay" 2 delivers its blow and at the same time the change of the shed takes place. The operation is repeated,

s 4-8 and hack into their position of rest, the tappet trap42 once disconnect" thatis to say; the shuttle 19 is driven through the shedhy similar devices from the 013- posite side of the machine 'in the direction stated that when the shuttle is driven through the shed, the screw 22 or 23 which. is moving in front runs idly andonly the" rearone effects the pressingin otthe thread.

The double arraneeinent ofthe screws howi M33 i i t t ever, enables the operation to he carried out a from both sides, as necessary in. wea machines. The WWW}? threads 1 are brought on to the guide bars 74 and 75 (see 1) on ivhich they slide unimpeded: when the shuttle is driven through the shed.

AhOhllGI'fOIID of the inventionis shoWn'in I mg} For the sake/of elearness thewai'p threads lying in front of the shiittle 19' have also been omittediflUn the shuttle it-f self the screws 22 and 23 are dispensed Wltll and their place are-mounted the gear heels 78and 79 (see Fig. 11.) These geai i Wheels '78 and "ZQlie in aslot in the extem sions 8O ahdSl off the shuttle and rotate on the'shaits 82 and 83. In front of the warp V 11 and 12 of the accompanying draw:

threads 1 is rigidh mounted the "roeltine lever 84 on a shaft 85 j i hich latter rotates in a hearing 86, (see "and 11). This arrangement is ofeourse provided on both sides, that is to say, on the left and right of the fabric. Onthe top of the rocking; lei er is noiinted the mile 8'? which runs fromleendr toendfand which lSlDhOVltlQClWlth W 'Et thread carries 88 tvhic-h terminates in a devices eonneeted therewith is dispensed with. To drive the shuttle thron h the shed only the thrust loan l8. is necessary, which her a is driven backwards and :ter-f Wards by similar devicesto those described and-shown in Fig. 1, The extensions 8O aiidgl oi the shuttle are connected hythe struts O1 ladders 89 and EM over which the Warp threads slide as they do ovetthe guide have 7-4: and 75 (see Fig. 1). v

The'aetion of this apparatus is as follows:

Theifocking lever 84 is swung into the position shown in Fig. 12, the weft threadcarriers 88 passing above the finished point t through the warp threads 1. The shed is opened and the shuttle 19 is driven into the shed and through it in the direction of the arrow ,f in 11 in the manner which through the guides 27 and .28 into the middle of the shed.

While the gear wheel 79 runs idly through the shed the weft thread 7 is brought under the rear gear wheel 78 and ispressed in a serpentine line between the Wheelandthe rack. When the shuttle 19 has been driven sufficiently far forward, it is taken up by a thrust baronthe side opposite to Fig. 11 and heldfastbydevices not shown here. The thrust bar 48 shown in Fig. 11 returns to its original position and during this time the leverBl swings in the direction of thearrow in Fig. 12 downwards, the Weft thread being stripped off the rear warp threads 1 and remaining in the middle of the shed. The thrust bar 4:8 has in the meantime passedto the rear and the slay 2 can make its blow, the lever 84; having been removed out ofits path by the downwar l swing. By the blow of the slay 2 the weft thread 7 pressed into the serpentine line is rotated and laid at the finished point 4: isa horizon tal serpentine line and correctly around the warp threads 1 the effect of which is that no tractive action. takes place and any narrowlngof the fabrlc is prevented. The slay swlng's back, the shed is changed, the lever 84; swings upwards andthe operation is re-- peated inthe opposite direction to that indicated by the arrow finll, and soon. VVhereasin ordinary fabrics the narrowing action is of lesser importance, it is necessary in. fabrics such as pile carpetsfor example. that the fabric and-the warps remain of equal width, and consequently also that-the stretched warp threads 1 remain in a straight,

line, ;as ordinarily, in i such machines tools pass overythe finished point i bet-ween the .warp threads,- which have to effect the formationof the knots.-

i I claim as nay-invention; a ,1. In an apparatusof the class described, ashuttle for inserting anweft into the shed,

and rotary devices coacting' with theshuttle for. laying the-weft in a. serpentine path at the bottom of the shed. a

. ,2. In anapparatus, ofthe-class described, a shuttle for inserting. a weft intothe shed,

rotary devices enacting with the shuttle for laying: the weft in a serpentine path at the bottom of the shed, and guides for directin{ the weft to the said rotary device.

, In an apparatus of the class described, a shuttle for inserting: weft threads into the shed, a thrust bar for moving the shuttle, rotary devices for laying the weft in a serpentine patlat the bottom of the shed, and a guide for each rotary device for directing the weft into the same.

4. In an apparatus of the class described, shuttle for inserting weft threads into the shed, a thrust bar for moving the shuttle, rotary devices for laying the weft in a serpentine path at the bottom of the shed, a rotary shaft for turning the said rotary devices, and a guide for each rotary device for directthe weft thereto.

5. in an apparatus of the class described, 0. shuttle for inserting weft threads into the shed, a shaftearried by the said shuttle, rotary devices mounted on the said shaft and adapted to lay the weft in a serpentine path at the bottom of the shed, a thrust bar for moving the shuttle, a rotary shaft for turning the said shaft carried by the shuttle and the rotarydevices mounted thereon, means for moving the said rotary shaft longitudi nally with the said thrust bar. and means for turning the said rotary shaft.

6. In an apparatus of the class described, a shuttle for inserting: weft threads into the shed, a shaft carried by the said shuttle, rotary devices mounted on the said shaft and adapted to lay the weft in a serpentine path at thebottom of the shed, a thrust bar for moving the shuttle, a rotary shaft, means for connecting and disconnecting the said rotary shaft and the shaft carried by the shuttle, and guides for directing the weft into the path of the said rotary devices.

7. In an apparatus of the class described, a shuttle for inserting weftthreads into the shed, a support for the said shuttle when the same is at rest, a thrust bar adapted to enthe end of the shuttle to shift the same, a shaft mounted and jourualed in bearings carried by the said shuttle. rotary devices connected to the saidshaft for laying the weft in a serpentine path at the bottom of the shed, a rotary shaft, means for connecting and disconnectingthe rotary shaft to the shaft journaled in the hearings on the shuttle, means for movingthe said thrust bar and rotary shaft together longitudinally, means for turning the said rotary shaft and guides for directing-the weft into the path of the said rotary devices mounted on the shaft carried by the shuttle.

In testimony whereof I affix my signature. 

